49052

Appears in sequences

• Number of semi-meanders of order n with 4 components.at n=8A046723
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x+(-1)^k)^k for 0 <= k <= n.at n=49A248975
• Numbers k such that 325*2^k+1 is prime.at n=17A322955
• Numbers which can written in exactly four ways as a sum of two distinct nonzero pentagonal numbers.at n=3A333014