22505

Appears in sequences

• Number of atoms in a decahedron with n shells.at n=30A004068
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 60.at n=4A031738
• Position where n (presumably) appears the last time in A107261, or 0 if n keeps appearing.at n=22A107262
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 10000-11111-00001 pattern in any orientation.at n=13A147070
• a(n) = 25*n^2 + 5.at n=29A158445
• Number of n-digit primes whose sum of digits is 7.at n=32A259144
• Maximum value of the cyclic convolution of the first n positive integers with themselves.at n=41A294172
• a(n) is the number of 2 X 2 matrices with elements 1..n where at least one row, at least one column and at least one of the two diagonals is strictly increasing.at n=15A391092