- made by his son,
George H. Darwin. The term
tribonacci was
suggested by
Feinberg in 1963. The
tribonacci constant 1 + 19 + 3 33 3 + 19 − 3 33 3 3 = 1...
- number.
Given Euler's
totient function, φ(44) = 20 and φ(69) = 44. 44 is a
tribonacci number,
preceded by 7, 13, and 24,
whose sum it equals. 44 is the number...
- the 52nd
prime (239) plus 52. 291 is one of the
positions of “c” in the
tribonacci word abacabaab…
defined by a->ab, b->ac, c->a. 291 is the sum of 6 different...
- progression, (65521, 65539, 65557). 65,792 =
Leyland number 66,012 =
tribonacci number 66,049 = 2572,
palindromic in
hexadecimal (1020116) 66,198 = Giuga...
-
heptagonal number. an
icosioctagonal number. a
centered octagonal number. a
tribonacci number. an open
meandric number. the
ninth member of the Mian-Chowla sequence...
-
number 35840 =
number of
ounces in a long ton (2,240 pounds) 35890 =
tribonacci number 35899 =
alternating factorial 35937 = 333,
chiliagonal number 35964...
- 5743 =
number of
signed trees with 9
nodes 5749 – super-prime 5768 –
tribonacci number 5776 = 762 5777 –
smallest counterexample to the
conjecture that...
-
primes (139 + 149 + 151 + 157 + 163 + 167),
nontotient 927 = 32 × 103,
tribonacci number 928 = 25 × 29, sum of four
consecutive primes (227 + 229 + 233...
- 274's sum of its
proper divisors is 140. The
number 274 is the 13th
tribonacci number. This is
defined by the
equations P(0)=P(1)=0 P(2)=1 and...
- {\displaystyle 3125=5^{5}} ). 3136 = 562,
palindromic in
ternary (110220113),
tribonacci number 3137 –
Proth prime, both a left- and right-truncatable
prime 3149...
