Irregular triangle read by rows: T(m, k) is the list of squarefree numbers A002110(m) < t < 2*A002110(m) such that A001221(t) = m.

A288813

Irregular triangle read by rows: T(m, k) is the list of squarefree numbers A002110(m) < t < 2*A002110(m) such that A001221(t) = m.

Terms

    a(0) =3a(1) =10a(2) =42a(3) =330a(4) =390a(5) =2730a(6) =3570a(7) =3990a(8) =4290a(9) =39270a(10) =43890a(11) =46410a(12) =51870a(13) =53130a(14) =570570a(15) =690690a(16) =746130a(17) =870870a(18) =881790a(19) =903210a(20) =930930a(21) =1009470a(22) =11741730a(23) =13123110a(24) =14804790a(25) =15825810a(26) =16546530a(27) =17160990a(28) =17687670a(29) =18888870

External references