23324
domain: N
Appears in sequences
- Degrees of irreducible representations of Held group He.at n=32A003912
- Table read by rows: list of even numbers to the right of the central elements of the (2,3)-Pascal triangle A029600.at n=42A029617
- Even numbers to left of central elements of the (3,2)-Pascal triangle A029618.at n=42A029631
- Start to read the sequence digit by digit and erase the first "1" you encounter, then the first "2", the first "3", etc., until the first "9"; go on from there and erase again the first "1", the first "2", etc., until "9" -- and so on, cyclically until the end of the (infinite) sequence. Concatenate what is left. The result is the concatenation of all integers of the sequence.at n=12A108709
- Triangle T(n,k), 0 <= k <= n, defined by : T(n,k) = 0 if k < 0, T(0,k) = 0^k, (n+2)*(2*n-2*k+1)*T(n,k) = (2*n+1)*( 4*(2*n-2*k+1)*T(n-1,k-1) + (n+2*k+2)*T(n-1,k) ).at n=38A123382
- a(n) is the smallest number whose English name has the letter "f" in the n-th position, or -1 if no such number exists.at n=37A164794
- a(n) is the smallest number whose English name has the letter "r" in the n-th position, or -1 if no such number exists.at n=40A164796
- a(n) is the smallest number whose English name has the letter "u" in the n-th position, or -1 if no such number exists.at n=39A164797
- Numbers n for which the digital sum contains the same distinct digits as the digital product but the digital sum is not equal to the digital product.at n=36A249335
- Expansion of (1 - x^3 + x^4)/((1 - x^3 + x^4)^2 - 4*x^4).at n=29A376788