A066870 Happy amicable pairs: numbers which belong to an amicable pair in which both terms are happy numbers.

10572550, 10854650, 32685250, 34538270, 35361326, 40117714, 35390008, 39259592, 186878110, 196323170, 242126704, 257841296, 250876395, 323303445, 300208696, 313576904, 388904355, 465418845, 395939775, 499717185, 541114808

Offset

1,1

Comments

In first 5000 Amicable pairs, there are 111 happy amicable numbers.

Links

Amiram Eldar, Table of n, a(n) for n = 1..20000

Shyam Sunder Gupta, Amicable Numbers.

Example

a(1) = 10572550 and a(2) = 10854650, where a(1) and a(2) are happy numbers and also (10572550, 10854650) is an amicable pair.

Crossrefs

Cf. A063990, A007770.

Sequence in context: A185805 A306476 A251640 * A340110 A250963 A233500

Adjacent sequences: A066867 A066868 A066869 * A066871 A066872 A066873

Keyword

nonn,base

Author

Shyam Sunder Gupta, Jan 21 2002

Status

approved