225720

Appears in sequences

• Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,29.at n=20A064251
• Triangle generated by e.g.f.: A(x,y) = exp(x + y*(x^2+x^3)), read by rows of length [n/2+1].at n=38A118588
• Numbers with prime factorization pqrs^3t^3.at n=9A190385
• Number of pairs of intersecting diagonals in the exterior of a regular n-gon.at n=41A211381
• The Szeged index of the triangle-shaped benzenoid T_n (see Fig. 5.7 of the Diudea et al. reference).at n=7A245833
• El Gradechi's hybrid coefficients alpha^{4,6}_n.at n=8A331769
• Numbers whose infinitary divisors have a mean infinitary abundancy index that is larger than 2.at n=24A374788