25125
domain: N
Appears in sequences
- Centered tetrahedral numbers.at n=33A005894
- a(n) is the concatenation of n and 5n.at n=24A019553
- Structured heptagonal diamond numbers (vertex structure 5).at n=24A100179
- Difference between n-th prime squared and n-th perfect square.at n=37A106588
- Numbers k such that k and k^2 use only the digits 1, 2, 3, 5 and 6.at n=48A136974
- Sum of proper divisors of Motzkin number A001006(n).at n=13A152982
- Eigentriangle of triangle A085478.at n=59A186023
- Smallest odd number greater than any previous term such that it divides the concatenation of all the previous terms and itself; begin with 1.at n=16A228806
- Concatenation of n^2 and n^3.at n=4A239460
- Numbers k such that 365*2^k+1 is prime.at n=27A323007
- Triangle read by rows: T(n,m) (n >= m >= 1) = number of vertices formed by drawing the lines connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares.at n=51A331453
- Antidiagonal sums of A343053.at n=22A377521
- Concatenations x||1||x for numbers x.at n=24A392225