63365

Appears in sequences

• 4-dimensional analog of centered polygonal numbers: a(n) = n(n+1)*(n^2+n+4)/12.at n=29A006007
• Odd square pyramidal numbers.at n=28A015221
• Convolution of Lucas numbers and composite numbers.at n=16A023618
• Expansion of 1/((1-x^2)(1-5x+x^2)).at n=7A089927
• Structured rhombic dodecahedral numbers (vertex structure 9).at n=28A100157
• Symmetric triangle, read by rows of 2*n+1 terms, similar to triangle A008301. Second term 5 times first term.at n=19A126155
• Symmetric triangle, read by rows of 2*n+1 terms, similar to triangle A008301. Second term 5 times first term.at n=21A126155
• Secondary diagonal of symmetric triangle A126155: a(n) = A126155(n+1,n).at n=3A126158
• Integers m such that 3*m+1 and 7*m+1 are both perfect squares.at n=4A160695
• Numbers n such that n and n+-1 have 4 distinct prime factors.at n=8A168628
• Number of blocks in a Steiner Quadruple System of order A047235(n+1).at n=37A228124
• Numbers of pyramid polycubes of a given volume in dimension 4.at n=19A229916
• G.f. A(x) satisfies: (1 + x) = A(x)*A(x^2)^2*A(x^3)^3*A(x^4)^4* ... *A(x^k)^k* ...at n=36A307649
• Number of partitions of integer partitions of n where all parts have the same length.at n=28A319066