A106037 Special highly composite numbers: a highly composite number (A002182) that divides all larger highly composite numbers.

1, 2, 6, 12, 60, 2520

Offset

1,2

References

J. L. Nicolas, On highly composite numbers, pp. 215-244 in Ramanujan Revisited, Editors G. E. Andrews et al., Academic Press 1988.

Links

Table of n, a(n) for n=1..6.

Shyam Sunder Gupta, Equal Product of Reversible Numbers (EPRN), Exploring the Beauty of Fascinating Numbers, Springer (2025) Ch. 12, 353-365.

Steven Ratering, An interesting subset of the highly composite numbers, Math. Mag., 64 (1991), 343-346.

Crossrefs

Cf. A002182, A002201, A000005.

Cf. A072938.

Sequence in context: A085819 A069047 A095921 * A385391 A136240 A090747

Adjacent sequences: A106034 A106035 A106036 * A106038 A106039 A106040

Keyword

nonn,fini,full

Author

N. J. A. Sloane, May 27 2005

Status

approved