23058

Appears in sequences

• Triangle of the square of the normalized, unsigned Stirling matrix of the first kind.at n=33A027477
• Second subdiagonal of triangle A027477, constructed from the Stirling numbers of the first kind.at n=5A027481
• a(n) = Sum_{k=m..n} T(k,n-k), where m = floor((n+1)/2); a(n) is the n-th diagonal-sum of left justified array T given by A027948.at n=25A027959
• Gaps of 8 in sequence A038593 (lower terms).at n=15A038655
• Mean divisor of n differs by <= 1 from mean divisor of all numbers from 1 to n-1.at n=23A049010
• a(n) = (k-n+1)^n + (k-n+2)^n + ... + (k-1)^n + k^n, where k = n(n+1)/2.at n=3A069876
• Sum of next n 4th powers.at n=3A075665
• Duplicate of A069876.at n=3A075672
• Numbers k such that k and 3*k, taken together, are pandigital.at n=3A115923
• Expansion of 1/(1 - x - x^3 + x^5).at n=48A123552
• Numbers k such that 64*k^6 + 1091 is prime.at n=27A155809
• a(n) = 4*n^4 + 24*n^3 + 84*n^2 + 144*n + 98.at n=7A160828
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+2y>0.at n=18A211624
• Numbers that are both a sum and a difference of two positive cubes.at n=39A225908
• Number of n X 3 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero.at n=6A231032
• T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero.at n=42A231037
• Numbers n such that for some m, A166133(m)=n, A166133(m+1)=n^2-1, in increasing order.at n=39A256407
• Numbers n such that n is the average of four consecutive primes n-5, n-1, n+1 and n+5.at n=39A258088
• Positive numbers that are the sum of two (possibly negative) cubes in at least 2 ways (primitive solutions).at n=35A293647
• Triangle read by rows: T(n,m)= Sum_{k=0..m/2} C(n-k,m-2*k)*C(n-k,m-k)*C(n,k)/C(2*k,k).at n=49A338397