25676

Appears in sequences

• Powers of cube root of 6 rounded to nearest integer.at n=17A017992
• Powers of cube root of 6 rounded up.at n=17A017993
• a()=A037260 and its first [ A037261 ], 2nd [ A037262 ] and 3rd [ A037263 ] differences together include every number at most once and are monotonic and minimal.at n=23A037260
• a(n) = n^2*(2*n^2 + 1)/3.at n=14A071270
• Numbers k such that 6*k+5, 6*k+11, 6*k+17, 6*k+23 are consecutive primes.at n=23A090836
• Number of ordered quadruples (i,j,k,l) in range [0..n] satisfying i == j (mod 2), j == k (mod 3) and k == l (mod 4).at n=27A115523
• Pentagonal numbers with prime indices.at n=31A116995
• Numbers k such that k and k^2 use only the digits 2, 5, 6, 7 and 9.at n=22A137112
• Number of arrays of 2n nondecreasing integers in -3..3 with sum zero and equal numbers greater than zero and less than zero.at n=25A203286
• Pentagonal numbers which are the arithmetic mean of two consecutive primes.at n=18A234531
• Triangle T(n, k) = Numbers of non-equivalent (mod D_3) ways to place k points on a triangular grid of side n so that no two of them are adjacent. Triangle read by rows.at n=37A239572
• Number of non-equivalent (mod D_3) ways to place 6 indistinguishable points on a triangular grid of side n so that no two of them are adjacent.at n=5A279446
• Square array A(n,k), n >= 0, k >= 1, read by antidiagonals upwards, where A(n,k) = sum of unimodal products of length n and bound k.at n=51A287532
• Pentagonal numbers (A000326) in which parity of digits alternates.at n=20A297644
• Pentagonal numbers divisible by 4.at n=33A298397
• Figurate numbers based on the small stellated dodecahedron: a(n) = n*(21*n^2 - 33*n + 14)/2.at n=13A318159
• Pentagonal numbers that are abundant.at n=42A379264