44425

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (F(2), F(3), F(4), ...), t = A000201 (lower Wythoff sequence).at n=27A025107
• Szeged index of the prism graph C_n X P_2 (n >=3).at n=22A245829
• Numbers whose septenary, octal and nonary representations are prime when read in decimal.at n=31A281252
• Expansion of e.g.f. exp(exp(x/(1 + x)) - 1).at n=10A317362
• Numbers k such that 335*2^k+1 is prime.at n=15A322960
• Bases b where exactly eight primes p with p < b exist such that p is a base-b Wieferich prime.at n=20A325884