18156

Appears in sequences

• Numbers k such that 187*2^k+1 is prime.at n=13A032470
• Number of possible queen moves on an n X n chessboard.at n=17A035005
• Number of permutations of 1..n containing the relative rank sequence { 146523 } at any spacing.at n=3A159121
• Number of permutations of 1..n containing the relative rank sequence { 154623 } at any spacing.at n=3A159129
• Number of permutations of 1..n containing the relative rank sequence { 326154 } at any spacing.at n=3A159171
• Numbers n such that Sum_{i=1..n} i^(i') == 0 (mod n), where i' is the arithmetic derivative of i.at n=11A227502
• a(n) = 4^n*(n/4 + binomial(n+1/2, 1/2)).at n=6A241524
• Erroneous version of A002135.at n=7A260337
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 329", based on the 5-celled von Neumann neighborhood.at n=30A271275
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 382", based on the 5-celled von Neumann neighborhood.at n=34A271541
• Total number of parts coprime to n in the partitions of n into 10 parts.at n=41A363328