30627

Appears in sequences

• a(0) = 1, a(n) = 25*n^2 + 2 for n > 0.at n=35A010015
• Number of partitions satisfying cn(1,5) + cn(4,5) < cn(2,5) + cn(3,5).at n=44A039892
• Number of upward triangles in a Star of David matchstick arrangement of size n.at n=18A045950
• Coefficient of x^n in A(x)^n is A000670(n), which gives preferential arrangements of n labeled elements.at n=8A088791
• Number of compositions of n where the difference between largest and smallest parts equals 9 and adjacent parts are unequal.at n=16A214278
• Numbers k such that both Sum_{i=1..k} i*prime(i) and Sum_{i=1..k} (k+1-i)*prime(i) are prime.at n=41A356178
• First position index for A197123(n) in the decimal expansion of Pi.at n=8A375789