User blog comment:! cook the lettuce/Extend This Notation!/@comment-37485018-20191211041902


 * [a]=15^a
 * [1,#,a]=[#,a]
 * [[#],#,a]=[#,(+^a),a]
 * [#,a,b]=[#,[a,[a...[a]...]]] with b copies
 * [#,k,1,#,a]=[#,k-1,a,#,1,a]
 * [k[#,d]#a]=[k-1[#,d-1]k-1[#,d-1]2,#,a]
 * If g[#,[1]]k]=[a,#[#[a-1,#[#,[1]]k]]k-1]
 * [#,+,a]=[#,a,a...a,a] with a copies
 * [#,(+^a),b]=[#,(+^a-1),(+^a-1)...(+^a-1),(+^a-1),a] with b copies