-7225

Appears in sequences

• a(1) = 1; a(2) = 1; a(3) = 1; a(4) = 1; a(5) = 1; a(n) = a(n-1)+4a(n-2)-3a(n-3)-3a(n-4)+a(n-5) for n >= 6.at n=17A122608
• Abundances of A188484(n).at n=23A188487
• Alternating sum of centered 25-gonal numbers.at n=33A270693
• Triangle read by rows, based on products of Jacobsthal numbers (A001045).at n=34A378931