26441

Appears in sequences

• Convolution of Fibonacci numbers and A001950.at n=16A023612
• Number of digits in n-th term of A001387.at n=25A049194
• Numbers n such that n-1, n and n+1 can be expressed as a sum of 2 squares in at least 2 ways.at n=2A091459
• Triangle read by rows, formed from product of Pascal's triangle (A007318) and Aitken's (or Bell's) triangle (A011971).at n=37A095674
• Sum of the squares of the first n squarefree numbers.at n=32A111715
• Triangle read by rows: T(n,k) is the number of hill-free Dyck paths of semilength n having pyramid weight k.at n=62A114597
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, 0), (-1, 1), (0, -1), (1, -1), (1, 0)}.at n=11A151507
• Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly two bit positions.at n=53A261074
• Number of independent vertex sets and vertex covers in the n-cube-connected cycle graph.at n=0A292701
• Number of counterclockwise n-step spirals on hexagonal lattice where turns of 2*Pi/3 are forbidden.at n=17A309982
• Fifth Lie-Betti number of a path graph on n vertices.at n=16A364579