51528

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MFS = ZSM-57 H1.5[Al1.5Si34.5O72] starting with a T2 atom.at n=14A019176
• Numbers n such that n+1 and phi(n)+1 are both perfect squares.at n=29A089952
• Chebyshev polynomials S(n,227).at n=2A098245
• Number of 6-step one space at a time bishop's tours on an n X n board summed over all starting positions.at n=16A187159
• Principal diagonal of the convolution array A213548.at n=17A213549
• Numbers of the form p^2 - 1 where p is a prime of the form 3*k-1 (A003627).at n=24A301812
• a(n) = n^4 + 4*n^2 + 3.at n=15A304726
• a(n) = 144*n^2 - 24*n (n>=1).at n=18A305072
• a(n) = 1 + 2 * (a(n-1) + a(n-4) + a(n-6)) + a(n-7) for n>3, with initial values 0 if n<0, and 1,3,8,18 for n=0..3.at n=13A317188
• Let p = A002145(n) be the n-th prime == 3 (mod 4); a(n) is the multiplicative order of 2+-i modulo p in Gaussian integers.at n=26A385165