30276

Appears in sequences

• Central quadrinomial coefficients: largest coefficient of (1 + x + x^2 + x^3)^n.at n=9A005190
• Quadrinomial coefficients.at n=4A005723
• a(n) = (5*n + 4)^2.at n=34A016898
• a(n) = (6*n)^2.at n=29A016910
• a(n) = (7*n + 6)^2.at n=24A017054
• a(n) = (8*n+6)^2.at n=21A017138
• a(n) = (9*n + 3)^2.at n=19A017198
• a(n) = (10*n + 4)^2.at n=17A017318
• a(n) = (11*n + 9)^2.at n=15A017498
• a(n) = (12*n + 6)^2.at n=14A017594
• a(n) = Sum_{k=0..n} T(n,k) * T(n,n+k), with T given by A027113.at n=7A027140
• Squares which are the sum of twin prime pairs.at n=7A037072
• Numbers k such that phi(k) is equal to A008473(k-1).at n=7A039780
• Squares with initial digit '3'.at n=12A045786
• Denominator of 1/36 - 1/n^2.at n=28A061046
• Largest square less than or equal to sum of previous terms.at n=18A061886
• Squares that are the sum of two consecutive primes.at n=13A062703
• Collatz-2 (A063041) trajectory starting at 29.at n=40A063044
• Collatz-2 (A063041) trajectory starting at 29.at n=25A063044
• Collatz-2 (A063041) trajectory starting at 29.at n=10A063044