51476

Appears in sequences

• Numbers k such that 74*2^k-1 is prime.at n=6A050413
• Start with n, apply k->2k+1 until reach new record prime; sequence gives number of steps needed.at n=19A051918
• Index of first occurrence of n in A154404.at n=42A154952
• Number of nondecreasing integer sequences of length 20 with sum zero and sum of absolute values 2n.at n=15A158154
• Expansion of phi(-x^5) * f(x^2, x^8) / psi(-x)^2 in powers of x where phi, psi, f(,) are Ramanujan theta functions.at n=30A259392
• Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=5A302816
• T(n,k) = number of n X k 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=41A302820
• Number of 6Xn 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=3A302824